I have this DEWALT DW5820 1-Inch by 31-Inch by 36-Inch 4-Cutter SDS Max Rotary Hammer Bit

DEWALT DW5820

From the ManufacturerDeWalt SDS Max bits are used primarily for drilling holes in concrete, rock, artificial stone, and other masonry materials. Common applications include drilling holes for mechanical anchors and holes for installing pipe and conduit. Longer helix expedites mill removal from the hole for faster drilling. Open head design allows mill to easily enter the flutes for faster drilling. ... »» Read more...

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